ASM: LoadLibrary & GetProcAddress

Question

I am using ASM first time ever and before i continue i need to know if i understood everything right when i wrote this. The current code looks like this:

push 0xDEADBEEF      ; address of library name
mov eax, 0xDEADBEEF  ; address of LoadLibraryA

call eax        ; call LoadLibraryA

mov esi, eax    ; store returned address

push 0xDEADBEEF      ; address of function name
push esi        
mov eax, 0xDEADBEEF   ; address of GetProcAddress

call eax             ; call GetProcAddress
mov esi, eax         ; store returned address

push 0
push 0
push 0
call esi  ; call the function returned by GetProcAddress

The 0xDEADBEEF's are just dummy addresses that i will patch later. Is there anything wrong? =)

@Michael i just need to know if the code i wrote will work correctly (before i will actually compile it and patch the dummy addresses) — thatoneguy, Jul 06 '11 at 22:54
@thatoneguy Did it work? Btw, how would you get the address of LoadLibrary function — Sourav Kannantha B, Jul 15 '21 at 16:30

score 0 · Answer 1 · answered Jul 06 '11 at 23:10

You don't normally call GetProcAddress directly. This is because it's exported from a DLL. What the linker will do in this case is to synthesize a GetProcAddress function that does a indirect far call to the __imp__GetProcAddress symbol. See http://blogs.msdn.com/b/oldnewthing/archive/2006/07/24/676669.aspx and http://blogs.msdn.com/b/oldnewthing/archive/2010/03/18/9980802.aspx

ASM: LoadLibrary & GetProcAddress

1 Answers1